title: The interactive effects of recovery mode and duration on subsequent repeated sprint performance.
abstract: The aim of this study was to examine the interactive effects of recovery mode and duration on subsequent repeated short sprint (RSS) performance. Ten male recreational athletes (age, 27.9 ± 5.0 years; height, 1.80 ± 0.07 m; mass, 81.6 ± 13.5 kg) performed 4 randomized trials consisting of a 30-second cycle sprint, followed by a specified recovery period (45 or 180 seconds), and a subsequent set of RSS (7 × 5 seconds, 20-second passive rest periods). Recovery mode was either active (AR; 70% of the power output at lactate threshold) or passive (PR). Mean heart rate and V[Combining Dot Above]O2 were significantly higher (p ≤ 0.05) in AR than in PR over both recovery durations. Although the difference in V[Combining Dot Above]O2 reached significance after 10-15 seconds, a significant (p ≤ 0.05) difference in heart rate was observed only after 26 seconds (45-second trials) - 75 seconds (180-second trials). Blood lactate was significantly (p ≤ 0.05) lower in AR than in PR only after 135 seconds (mean difference, 2.16 mmol·L; 95% likely range, 0.77-3.55 mmol·L). Mean peak power output in the RSS test was significantly (p ≤ 0.05) higher following PR45 than AR45 (12.0 ± 1.4 vs. 11.4 ± 1.4 W·kg) and following AR180 than PR180 (12.7 ± 1.2 vs. 12.0 ± 1.2 W·kg). In conclusion, when rest periods are short, a PR strategy appears to optimize subsequent RSS performance. However, as the recovery duration increases subsequent RSS performance appears to benefit from an AR strategy.
authors.affiliation: School of Human Sciences, St Mary's University College, Twickenham, United Kingdom.
authors.forename: James
authors.initials: J
authors.lastname: Brown
authors.forename: Mark
authors.initials: M
authors.lastname: Glaister
mesh_terms: D000328:Adult; D054874:Athletic Performance / Q000502:physiology*; D006339:Heart Rate; D006801:Humans; D019344:Lactic Acid / Q000097:blood; D008297:Male; D053580:Muscle Strength / Q000502:physiology; D018482:Muscle, Skeletal / Q000502:physiology; D010101:Oxygen Consumption; D020127:Recovery of Function / Q000502:physiology*; D012146:Rest / Q000502:physiology*; D012420:Running / Q000502:physiology*; D013997:Time Factors; D055815:Young Adult
chemical_list: D019344:Lactic Acid